Pen cap



FIG. 1 is an upper front left perspective view of a pen cap showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is an enlarged top plan view thereof;

FIG. 8 is an enlarged bottom plan view thereof;

FIG. 9 is an upper front left perspective view of a pen cap showing a variant of the design illustrated in FIG. 1;

FIG. 10 is a front elevation view thereof;

FIG. 11 is a rear elevation view thereof;

FIG. 12 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;

FIG. 13 is a top plan view thereof;

FIG. 14 is a bottom plan view thereof;

FIG. 15 is an enlarged top plan view thereof; and,

FIG. 16 is an enlarged bottom plan view thereof.

The broken lines shown in FIGS. 6, 8, 14, and 16 illustrate boundaries of the claim and form no part of the claimed design. 

CLAIM The ornamental design for a pen cap, as shown and described. 